Vista - Will Not Run Two Monitors

[pgrammer]

I had two monitors running on my desktop and moved the second monitor to my laptop. I want to display a copy on both monitors so I can use a huge monitor with my laptop.

I know the monitor works I tried it on two different computers and its very nice HD display.

I plug the monitor into my laptop and a screen pops up for external monitor located. I click display a copy on both monitors (presentation mode). I've also tried both of the other modes. When I plug in the monitor the laptop screen goes black or stays on depending on what option I use.

I know the video card detects the monitor because it pops up a PnP screen as soon as I attach it. I uninstalled the monitor and video card several times from device manager.

When I turn the monitor on the power light is orange and I get a self test screen saver on the monitor. When I plug the monitor into the laptop the power light on the monitor goes to yellow and it says "sleep mode - press a button or move the mouse" on the monitor.

No matter what I do the external monitor stays in sleep mode and never displays anything but a black screen with a built-in screen savor. I restarted several times, reinstalled the video card, checked drivers, reset the BIOS to defaults and ran through the help file on windows and followed the Wizard on screen. Nothing I do gets windows to send a signal to that monitor. Even closing the lid on the laptop doesn't help.

Edit:

BTW I also tried pressing the Function+F4 key on the laptop because the Windows help file says that it will enable/disable external monitors on laptops. When I press it the monitor screen goes black and turns off. When I press it again the laptop screen comes back on. But it does nothing to the external monitor.